Home / 15,400.93-21,251.70-11,369.90

Finding the Fourth Proportional to 15,400.93, 21,251.70 and 11,369.90

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Solution

The fourth proportional to 15,400.93, 21,251.70 and 11,369.90 is: 15,689.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,400.93 : 21,251.70 = 11,369.90 : x
  2. Step 2: Convert to fraction form
    15,400.93/21,251.70 = 11,369.90/x
  3. Step 3: Cross multiply
    15,400.93x = 21,251.70 × 11,369.90
  4. Step 4: Simplify right side
    15,400.93x = 241,629,597.57
  5. Step 5: Solve for x
    x = 241,629,597.57/15,400.93
  6. Step 6: Final answer
    x = 15,689.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.